46ba18db9b
In this commit BOLT#4 specification message have been added to the lnwire package. This messsage is needed in order to notify payment sender that forwarding node unable to parse the onion blob.
75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
package lnwire
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import (
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"crypto/sha256"
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"io"
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)
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// UpdateFailMalformedHTLC is sent by either the payment forwarder or by payment
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// receiver to the payment sender in order to notify it that the onion blob
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// can't be parsed. For that reason we send this message instead of obfuscate
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// the onion failure.
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type UpdateFailMalformedHTLC struct {
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// ChanID is the particular active channel that this
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// UpdateFailMalformedHTLC is bound to.
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ChanID ChannelID
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// ID references which HTLC on the remote node's commitment transaction
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// has timed out.
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ID uint64
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// ShaOnionBlob hash of the onion blob on which can't be parsed by the
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// node in the payment path.
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ShaOnionBlob [sha256.Size]byte
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// FailureCode the exact reason why onion blob haven't been parsed.
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FailureCode FailCode
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}
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// A compile time check to ensure UpdateFailMalformedHTLC implements the lnwire.Message
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// interface.
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var _ Message = (*UpdateFailMalformedHTLC)(nil)
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// Decode deserializes a serialized UpdateFailMalformedHTLC message stored in the passed
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// io.Reader observing the specified protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (c *UpdateFailMalformedHTLC) Decode(r io.Reader, pver uint32) error {
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return readElements(r,
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&c.ChanID,
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&c.ID,
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c.ShaOnionBlob[:],
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&c.FailureCode,
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)
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}
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// Encode serializes the target UpdateFailMalformedHTLC into the passed io.Writer observing
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// the protocol version specified.
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//
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// This is part of the lnwire.Message interface.
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func (c *UpdateFailMalformedHTLC) Encode(w io.Writer, pver uint32) error {
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return writeElements(w,
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c.ChanID,
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c.ID,
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c.ShaOnionBlob[:],
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c.FailureCode,
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)
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}
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// MsgType returns the integer uniquely identifying this message type on the
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// wire.
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//
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// This is part of the lnwire.Message interface.
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func (c *UpdateFailMalformedHTLC) MsgType() MessageType {
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return MsgUpdateFailMalformedHTLC
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}
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// MaxPayloadLength returns the maximum allowed payload size for a UpdateFailMalformedHTLC
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// complete message observing the specified protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (c *UpdateFailMalformedHTLC) MaxPayloadLength(uint32) uint32 {
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// 32 + 8 + 32 + 2
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return 74
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}
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